{"title":"Novel Azepinoindoles as 5-HT2C Agonists for Treating Depression, Drug Addiction, Alcoholism, PTSD, and Neuropathic Pain","authors":"Ram W. Sabnis*, ","doi":"10.1021/acsmedchemlett.5c00426","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00426","url":null,"abstract":"<p >Provided herein are novel azepinoindoles as 5-HT2C agonists, pharmaceutical compositions, use of such compounds in treating depression, drug addiction, alcoholism, post-traumatic stress disorder (PTSD), and neuropathic pain, and processes for preparing such compounds.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1507–1508"},"PeriodicalIF":4.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tim Depmeier, Walburga Hanekamp and Matthias Lehr*,
{"title":"Carbamates with ortho-Substituted O-Phenyl Groups as Dual Inhibitors of Fatty Acid Amide Hydrolase and Monoacylglycerol Lipase: Inhibitory Potency, Hydrolytic Stability, and QSAR Studies","authors":"Tim Depmeier, Walburga Hanekamp and Matthias Lehr*, ","doi":"10.1021/acsmedchemlett.5c00233","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00233","url":null,"abstract":"<p >The serine hydrolases fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL) are key enzymes in the degradation of endocannabinoids, which regulate numerous physiological processes. Their role in maintaining endocannabinoid balance makes them promising targets for treating neurological disorders. We synthesized a series of 6-(5-phenyltetrazolylhexyl)carbamates bearing <i>O</i>-phenyl residues with various <i>ortho</i>-substituents. Inhibition of FAAH and MAGL was found to depend on the inductive and electronic properties of these substituents. Electron-withdrawing groups increase carbamate reactivity, promoting faster covalent bonding with the catalytic serine in the enzymes’ active sites. However, this also raises the compounds’ susceptibility to hydrolysis. Quantitative structure–activity relationship (QSAR) analysis revealed a strong logarithmic correlation between FAAH inhibition of compounds with uncharged <i>ortho</i>-substituents, expressed as logIC<sub>50</sub>, and the electron-withdrawing effect of theses residues, measured by the Hammett sigma (σ) constant. Conversely, this correlation allows estimation of unknown Hammett constants from the FAAH inhibition data of suitably substituted carbamates.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1601–1609"},"PeriodicalIF":4.0,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Isoindolinone-Containing PARP Inhibitors: Synthesis and Therapeutic Applications in CNS Cancer Treatment","authors":"Xin Zhou, and , Steven H. Liang*, ","doi":"10.1021/acsmedchemlett.5c00410","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00410","url":null,"abstract":"<p >This patent discloses the development and therapeutic applications of novel poly(ADP-ribose) polymerase (PARP) inhibitors featuring an isoindolinone scaffold. These isoindolinone-based PARP inhibitors represent a strategically designed class of central nerve system (CNS) cancer therapeutics that combine potent PARP inhibitory activity with enhanced blood–brain barrier (BBB) permeability.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1497–1498"},"PeriodicalIF":4.0,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ivo E. Sampaio-Dias*, Hugo F. Costa-Almeida, Xavier C. Correia, Sara C. Silva-Reis, Vera M. Costa, José Brea, María I. Loza, José E. Rodríguez-Borges and Xerardo García-Mera,
{"title":"Proline Homologation in Melanostatin Neuropeptide: Discovery of Potent Modulators of the Dopamine D2 Receptors","authors":"Ivo E. Sampaio-Dias*, Hugo F. Costa-Almeida, Xavier C. Correia, Sara C. Silva-Reis, Vera M. Costa, José Brea, María I. Loza, José E. Rodríguez-Borges and Xerardo García-Mera, ","doi":"10.1021/acsmedchemlett.5c00287","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00287","url":null,"abstract":"<p >Melanostatin (MIF-1) is a naturally occurring neuropeptide acting as a positive allosteric modulator (PAM) of dopamine D<sub>2</sub> receptors (D<sub>2</sub>R), underscoring its potential for therapeutic use in central nervous system disorders associated with dopaminergic dysregulation, including depression, drug addiction, restless legs syndrome, tardive dyskinesia, and Parkinson’s disease. In this work, a new series of MIF-1 analogs using <span>l</span>-pipecolic acid as an <span>l</span>-proline surrogate was synthesized and pharmacologically evaluated by functional assays at the D<sub>2</sub>R. In this series, methyl <span>l</span>-pipecolyl-<span>l</span>-leucylglycinate (<b>9</b>) was found to exhibit superior performance compared to MIF-1 by promoting a 4.1- and 4.2-fold increase of dopamine potency at 0.01 and 1 nM, respectively. <i>In silico</i> conformational studies demonstrate that <b>9</b> preferentially adopts a γ-turn, corroborating that neither the C-terminal carboxamide nor the postulated type II β-turn conformation is required for PAM activity. Toxicological assays in human dopaminergic SH-SY5Y neuronal cells show that this compound exhibits no significant toxicity up to 100 μM in the MTT reduction and neutral red uptake assays.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1437–1444"},"PeriodicalIF":4.0,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Novel PARP1 Inhibitors and Their Use in Cancer Treatment","authors":"Xin Zhou, and , Steven H. Liang*, ","doi":"10.1021/acsmedchemlett.5c00411","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00411","url":null,"abstract":"<p >Poly(ADP-ribose) polymerase 1 (PARP1) is the most widely studied PARP enzyme, which plays a significant role in DNA damage repair. PARP1 inhibition has emerged as a clinically validated strategy to selectively target two cancer subtypes: tumors with homologous recombination deficiency (HRD) and Epstein–Barr virus (EBV)-associated malignancies. This patent highlights the synthesis and pharmaceutical compositions of PARP1 inhibitors and their uses in the treatment of cancer.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1494–1496"},"PeriodicalIF":4.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David C. Blakemore, Andre Shavnya* and Michael C. Willis*,
{"title":"Desulfinative Cross-Coupling as a Method to Overcome Problematic Suzuki–Miyaura Reactions of Pharmaceutically Relevant Heteroaromatic Boronates","authors":"David C. Blakemore, Andre Shavnya* and Michael C. Willis*, ","doi":"10.1021/acsmedchemlett.5c00327","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00327","url":null,"abstract":"<p >The well documented difficulties associated with direct (hetero)arylation of <i>aza</i>-aromatics (e.g., azines) at the α-position to nitrogen led to a collaborative project between the Willis group at Oxford and the Medicine Design department at Pfizer with the aim of addressing this challenge. The result of this collaboration has been a series of reports detailing the development of 2-<i>aza</i>-aryl sulfinates, as well as related 2-<i>aza</i>-aryl sulfone derivatives, as efficient nucleophilic reagents in palladium-catalyzed coupling reactions with (hetero)aryl halides. The developed chemistry is routinely used in the medicinal chemistry laboratories at Pfizer, and the patent literature now contains many examples of these methods being embraced across the pharmaceutical industry. Hundreds of pyridyl (and related heterocyclic) sulfinates are now commercially available from multiple vendors. In this microperspective we discuss the development and evolution of these methods and highlight subsequent applications.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1463–1472"},"PeriodicalIF":4.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmedchemlett.5c00327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuna Oikawa, Takanori Uzawa, Francois Berenger, Noriko Minagawa, Akiko Yumoto, Hideaki Takaku, Ryo Tamura, Yoshihiro Ito and Koji Tsuda*,
{"title":"GPepT: A Foundation Language Model for Peptidomimetics Incorporating Noncanonical Amino Acids","authors":"Yuna Oikawa, Takanori Uzawa, Francois Berenger, Noriko Minagawa, Akiko Yumoto, Hideaki Takaku, Ryo Tamura, Yoshihiro Ito and Koji Tsuda*, ","doi":"10.1021/acsmedchemlett.5c00375","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00375","url":null,"abstract":"<p >Language models have been increasingly popular in therapeutic peptide generation, but molecular diversity remains limited due to reliance on the 20 canonical amino acids. We propose a language model that generates peptidomimetics incorporating noncanonical elements like noncanonical amino acids and terminal modifications. To accomplish this, we created a vocabulary of over 17,000 noncanonical elements by extracting them from chemical formulas stored in the ChEMBL database. Our pretrained language model, GPepT, showed improved diversity in molecular structures and chemical properties. To demonstrate its real-world application, we fine-tuned the model for antimicrobial peptides. Experimental validation revealed that one of the generated peptidomimetics exhibited effective antimicrobial activity, marking a successful case of AI-driven peptide development. GPepT is fully accessible on HuggingFace: https://huggingface.co/Playingyoyo/GPepT.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1670–1675"},"PeriodicalIF":4.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmedchemlett.5c00375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jae Hun Ahn, Changkeun Im, Soyeon Kim, Iqra Bibi, In Ok Ko, Yong Jin Lee, Ji-Ae Park* and Choong Mo Kang*,
{"title":"64Cu-Labeled Boronic-Acid-Conjugated Porphyrin: A Novel Agent for PET Imaging and Boron Neutron Capture Therapy","authors":"Jae Hun Ahn, Changkeun Im, Soyeon Kim, Iqra Bibi, In Ok Ko, Yong Jin Lee, Ji-Ae Park* and Choong Mo Kang*, ","doi":"10.1021/acsmedchemlett.5c00146","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00146","url":null,"abstract":"<p >Radiometal-labeled porphyrin derivatives have emerged candidates for targeted brain tumor imaging and therapy. In this study, we synthesized a boronic-acid-conjugated porphyrin and radiolabeled it with <sup>64</sup>Cu to evaluate its dual-function potential for PET imaging and boron neutron capture therapy (BNCT). The <sup>64</sup>Cu-labeled 5,10,15,20-(tetra-4-dihydroxyborylphenyl)porphyrin ([<sup>64</sup>Cu]Cu-TDBP) exhibited excellent serum stability and significant uptake in U87MG cells. PET imaging in both xenograft and orthotopic models demonstrated time-dependent tumor accumulation, with selective localization in the brain tumor at 18 h post-injection (p.i.). The tumor-to-brain ratio increased from 7.2 at 4 h p.i. to 26.3 at 18 h p.i., alongside a rise in tumor boron concentration from 0.79 to 1.83 ppm over the same period. These results highlight the potential of [<sup>64</sup>Cu]Cu-TDBP as a promising theranostic agent for precise brain tumor imaging and effective BNCT.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1533–1537"},"PeriodicalIF":4.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and Development of Potent SOS1 Inhibitors with Effective Antitumor Activities In Vitro/In Vivo","authors":"Xudong Pang, Dawei Cui, Qing Zhang, Hui Liang, Ruifeng Liu, Binhua Lv* and Cheng-Yun Wang*, ","doi":"10.1021/acsmedchemlett.5c00152","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00152","url":null,"abstract":"<p >KRAS inhibitors encounter significant resistance, which may be partially mitigated through combination with SOS1 inhibitors. The structural diversity of SOS1 inhibitors presents potential solutions, offering a means to enhance treatment outcomes for KRAS mutant tumors. Herein, we report the discovery of potent SOS1 inhibitors and their antitumor activity both <i>in vitro</i> and <i>in vivo</i>. In vitro studies revealed that compound <b>21</b> exhibited potent antiproliferative activity, with IC<sub>50</sub> values of 16 nM in NCI-H358 and 17 nM in Mia Paca-2 cell proliferation assays. In the Mia Paca-2 xenograft model compound <b>21</b> exhibited significant antitumor activity with a TGI value of 38% at 12–50 mg/kg bid. Additionally, the pharmacokinetic (PK) and safety profiles of compound <b>21</b> support its potential for further development as an effective tool compound.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1538–1545"},"PeriodicalIF":4.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Compounds as SMARCA2 Inhibitors for Treating Non-small Cell Lung Cancer","authors":"Ram W. Sabnis*, ","doi":"10.1021/acsmedchemlett.5c00419","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00419","url":null,"abstract":"<p >Provided herein are novel compounds as SMARCA2 inhibitors, pharmaceutical compositions, use of such compounds in treating non-small cell lung cancer (NSCLE), and processes for preparing such compounds.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 8","pages":"1499–1500"},"PeriodicalIF":4.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}